Gas burner



W. F. SHUTT GAS BURNER 4 May 6, 1930.

2 SheetsSheet 2 Filed June 13, 1928 av'wento'a MAL-(HM FJHurT Patented May 6, 1930 WILLIAM F. SHUTT,

OF- JLJKRLEDU, TEXAS GAS IBUKNER- Application filed June 13,

This invention relates to improvements in gas burners, and its chief object is to provide a novel form of gas-directing means so positioned relatively to its air tube that the gas delivered from same under pressure to the air tube has a whirling motion imparted thereto whereby the gas and air are thorough- 1y commingled at the exit or burning end of the tube.

A further object of the invention is to provide a gas burner of the character just referred to which may be embodied either in a single or in a multiple burner and which can be easily installed and is efiicient and prac I tical in use.

The invention will be described with reference to the accompanying drawings, in which Figure 1 is a vertical sectional View through a portion of a furnace having a multiple burner embodying the invention installed therein.

Figure 2 is an elevation of the furnace wall and burner shown in Figure 1 as viewed from the right of Figure 1, the gas supply main and controlling valve for same being omitted.

Figure 3 is a longitudinal sectional View through one of the gas supply pipes and the jet carried thereby.

Figure is an end view of the jet shown in Figures 1, 2 and 8.

Figure 5 is an elevation of the jet shown in Figures 1 to 4.

Figure 6 is an end view of a modified form of jet.

Figure 7 is an elevation of the jet shown in Figure 6 as viewed from the left of the latter figure.

Referring first to Figures 1 and 2, which show the invention embodied in a multiple burner, the numeral 8 designates a furnace wall which may be taken as indicative of any support for the burner proper 9, said burner being shown as comprising a plurality of 1928. serial N6. 28531305- regulatingthe flow o'f'gas fromthe'ma-in l'l 1 through a gassupplypipe 13, and'14 a manifold connected to the'gas supply pipe 13.

A plurality of vertically aligned: tubular arms extend from-opposite sides of the manifold 14,-and a plurality-ofgas-conducb ing pipes16, one for-each of a -plurality of air-directing tubes '10, extendfrom the' manifold 14 and arms" 15 intosaid'tubes atsub stant-iall'yi right angles to saidmanifold and tubular arms 15; The gas-conducting pipes lfi terminate' approXimatelymidway between the ends of the tubes 10;

Attachedin any suitable-manner," as by welding, b razi-1'1g20r by screw-threads; tothe forward end ofeach 'gas-conductingi pipe-16 isa-je't member 17, each ofsaid jetunembers; as shownin- Figures 3;and 5, comprising a: base or jet-supporting member}; a jet 18 extending forwardly from the center of said jet-supportingmember, and a-p'air of a'rcnate'jets 19; also extendingforwardly from saidjet-supportingmember, one'on each side of the j et18,-wit-h their rear ends in alignment with the-jet 18L Thjets 19- are=each formed on the arc of a circle having theforward or outlet end of thejet 1-8 as-itscenter.

The outletends 20 of the jets *19 are offset from-- one another so that the stream' of gas issuing from theoutlet of eachof said jets, will-not only be substantially tangential to the: curvature of such jet but will-also be oblique to =aplane passing: through thecenter of such jet: at its point of connectiont'o the j et supporting--member andthe axis'ofthe jet 1'8: Thestreams of' gasissuingifrom the-oue let ends" 20 0f the jets '19- therefore" will be directed pastone another on opposite sides of thestreamsofg'a-sissuing from the outlet ends of the jets l8 and impinge against substantially diametricallyopposite portions of the walls of the tubes 10 and air admitted to the rear ends of the tubes 10, as indicated by the arrows in Figure 1, will be thoroughly commingled with the streams of gas issuing from the jets 18 and 19, thus insuring good combustion of the air and gas mixture at the forward ends of the tubes 10.

A modified form of jet member is shown in Figures 6 and 7. As there shown, the jet member 17 comprises a jet supporting member, a jet 18 extending forwardly from the center of said member, and three arcuate jets 19 also projecting forwardly from said member and equidistantly spaced from one another around. the jet- 18. The jets 19 are each formed on the arc of a circle having the forward or outlet end of the jet 18 as its center and the outlet end of each of the jets 19 is offset from the ends of the other two jets 19 in such a manner that the stream issuing from each of said jets will be both tangential to the curvature of such jet and oblique to a plane passing through the center of such jet at its point of connection to the jet-supporting member and the axis of the jet 18. Therefore the stream of gas issuing from the outlet end of each of the jets 19 will pass between the streams issuing from the other two jets 19 and also past the forwardly directed stream issuing from the jet 18' to impinge against the wall of the tube, thus giving the streams issuing from the jets 19 a whirling motion.

From the foregoing it will be evident that a single et member such as that indicated at 17 in Figures 1 to 5 or that indicated at 17 in Figures 6 and 7 may be mounted on the end of a single pipe within a single tube, such as that indicated at 10 in Figure 4, or a plurality of such jet members may each be mounted within one of a plurality of tubes 10 in a multiple burner, the essential feature of the invention being that the jet member is so constructed that streams of gas issuing under pressure therefrom will be given a whirling motion within the tube in which it is mounted to insure a thorough com mingling of the gas with the air passing from the rear end to the forward or burning end of such tube.

What is claimed is:

1. A gas burner comprising a cylindrical mixing chamber of uniform diameter throughout its length, a gas-supplying tube extending through one end of said chamber concentrically with the latter and terminating at a point approximately midway of the length of the chamber, a jet-supporting member carried by the forward end of said tube, a jet extending forwardly from and concentric with said member, and a plurality of jets extending forwardly from said member, each of the last-named jets being formed as the arc of a circle having the outlet end of the first-named jet as its center and each having its outlet so directed that the stream of gas issuing therefrom will be substantially tangent to the curvature of such jet.

2. A gas burner according to claim 1 wherein the outlets of the last-named jets are also so directed that the stream of gas issuing from each of them will be oblique to a plane passing through the center of the jet at its point of connection to the supporting member and the axis of the first-named et.

In testimony whereof I have hereunto set my hand.

VILLIAM F. SHUTT. 

